Introduction
Use the tools & resources collected by Cloudflare Community MVPs to help you implement, use, and troubleshoot Cloudflare.
This is a Cloudflare Community Tip. Community Tips address best practices when configuring Cloudflare, how to fix issues you may see, and tools to use to help you troubleshoot. See all Community Tips.
CLI Multi-Tools
htrace.sh
Multi-Tools
keycdn
CentrolOps.net
TurboBytes
UltraTools
DNS
whatsmydns
DNS Checker
IntoDNS
MxToolbox SPF Record Generator
UltraTools DNS Lookup
DNS Non-HTTPS Links
DNSViz
DNS-over-HTTPS (DoH)
Simple DNSCrypt
Cloudflared
DNS-over-TLS (DoT)
Stubby
unbound
Knot Resolver
DNSSEC
Verisign DNSSEC Analyzer
dig
DigWebInterface
DNS Sleuthing with dig
cURL
Everything curl - the book
Using cURL when Troubleshooting with Cloudflare
eMail
MxToolbox
Microsoft Remote Connectivity Analyzer
DMARC Domain Checker
DKIM Core Tools
proofpoint
eMail Quality Tests
Spammyness Test
eMail Header Analyzer
MxToolbox Email Header Analyzer
Browser
What’s My Browser
Claire, Is Site Using Cloudflare?
UI Design
Color by Cloudflare Design
Speed
WebPagetest
Read How to use webpagetest.org for page load speed testing
Latency
Pingdom
GTmetrix
Cloudflare Speed Test Tool
Website Preview
HOSTS.CX
SSL
SSL Labs Server Test
Dev Version SSL Labs Server Test
CDN77 TLS Test
Cloudflare SSL Test
Cloudflare Status
Cloudflare Status
Browsing Experience Security Check
Cloudflare Security Check
Privacy Pass
Get Privacy Pass
Cloudflare Supports Privacy Pass
Wordpress Tests
varvy
1.1.1.1 Tests
Read Me First
1.1.1.1 Diagnostic Tool
Developers
Domain Security
Cloudflare Domain Security Check
IP Reputation
IP Reputation Investigation
Project Honey Pot
Historical DNS
SecurityTrails
censys
VirusTotal
Background & Research Resources
Cloudflare Knowledge Base
Cloudflare Community search
Cloudflare Learning Center
Cloudflare Developers
Google
YouTube
Helpful On Support Tickets
HAR file(s)
Traceroute
https://www.example.com/cdn-cgi/trace
Helpful Tests, Links and Commands
http://www.example.com/cdn-cgi/trace
$ traceroute example.com
$ dig ns example.com +short
$ dig example.com +trace
$ curl -svo /dev/null https://example.com/
$ curl -svo /dev/null --resolve example.com:443:216.3.128.12 https://example.com/
$ curl -svo /dev/null --resolve example.com:80:216.3.128.12 http://example.com/
*Replace example.com with your domain.
If You Need More Help
These tools and help from this community of other Cloudflare users may help, if you still need further assistance, login to Cloudflare and then contact Cloudflare Support. When you contact support, make sure to include links to your community posts to help the Support Engineer help you.
Expert Comments Appreciated
This Community Tip will remain open for input from Community experts and those familiar with this issue. We really appreciate comments that start with words like: “This is my goto tool”, or “Try this command” or “Check this setting”.